Remote-control switch.



W` S, MAYER.

REMOTE CONTROL, SWITQH.

APPucATsoN man ofc. 19. 1914.

Eatented July 13, 1915.

2 SHEETS-SHEET 14 LMAO- W. s. MAYERV. REMOTE CONTROL SWITCH.

APPLICATION FILED DEC.I9. |914.

I Patente-July 13, 1915.

2 SHEETS-SHEET 2 I III IIII III IIII IIIIIIII d ybodimei'1t inother for-ms, and

Tozallwiomz'tfmay mBeitlmoWn'f that WALTER S. Munn, aficitizen of the-,United States, residing at Taunton, Mnssaeh-nsetts-,have invented certain new' and. useful' Improvements 1n Re` mote-Control Switches, of which the following is'fa specification; f'

Among the objectswo'the in'ifen'tion are si tofsimpli'fy the construction of switchesfof this class, This simplification 'is largely effected by placing one of'the Aswitch .coils inside 'of ther'other andby using a common internal magnetic circuit. V"llhe bridging member or'electrlcal connector ofthe switch proper is' one continuous piecel and at the 'samegtime this bridge, `or portions of it, act as a springfor breaking,` the circuit.'

The characteristics andadvantageslof the invention Will be further pointed'out, so far rasis neeessaryyin,connection with a detailed description of the accompanying drawing,

izvhich illustrates one' exemplifyin'g embodi 'nient o-'theinventionz lt is to'be under- Ystood that the invention .lis ca able of emn do notlimit "yself to the details except'as claimed hereinafter; y "fn-the drawings: Figure 1 is a side View partly in elevation and partly in section of 3e switch mechanism embodying the invention.

Fig. 2 is a top'plsn ofthe same. Fig. 3 is a' left hand elevition. .Fig. 4 is e side eleration' of `the central part of the device `partly in Section to show' morefparticularly thelatch mechanism. Fig. 5 'is a diagram of `"15 jecting through anlaperture in the top piece of core 3. Plunger 8 'hasa head l0 engaged by -a spring 11 abuttingagainst the bottom of' tho-magnet spool to yieldingly hold plun- Y ger 8doWn for reasons whichnvill y'appearf fivotedv to ilprightf 1s mainarmature or magnetic bridge piece 12, which carries the p main-'conductoror bridge 13, plreerabfl-yV of laminated construction, the lnminations -bes ing co'mposediof strips ofvcopper. One end of the conductor bridge 13 is connected to sini-innemen nemiser 1951914:

terminal-C on .times-basel and the` other. 'or nowi able end. ofthebridge is tofmalre abrea'lin'gi Contact with.. terminal; B on thevbafse: r..

1 At 'lzthe bridge' isbent .into partcineulzr. L1 form,.and'this partjof it constitutes afspring; 60 toy open theci-rcuit.l Y' At, the .movable 'endofg the ,bridgeenero-f the .leminae iis'v providedi with ann ming tip .1.5 which my berenebeds ,and this lamina; ,is so y arranged theta-.Rimini n e maintainoontnet of the arcing tip Witlifter'gi 65- ninal B 4after.theother' lamineflnwe broken i contact, andthus the nrcing tip (Yiillftalte-ithe arc and '.protectffthe remainder .ofthe bridge.

Frome member,y 5` carries side plates 15,.1 of insulating.A mterial ondthese 'support af de@ 70 tent roller I16rotatably' mounted upon a pin' 17. 1 1 YTo;cooperate 4with thisthe main'armw. ture 1,12 .carriesn'4 latch orl hookfeldf piroted` at 19' andf urged by n spring 2Q so ,thetithef 11i jg. hook will engagev tlieizrollemwhen:the arme-q ture is depressed. rlhe hook cnrriesnan. ex,- tensioni or *trigger V21, :the 4end 1 .of 'iwhicli en gages {..With the/. end` of.1 zplun ger-'fJ pin .195 -the armature 12 nndnircuit bridge 1S-@being apertmed-at lEil-to permit-pini) to engage the 50' trigger.` y y 'j y Base 1 carries terminals D and E for the` controlling-circuit. Frame member '5carries-binding posts F andV G suitably insulated; One conductor from-the controlling station is connected to the remote controlfr basel at D and the other similar conductor at E. One controlcircuit vpasses from *Efto `tlfis 'closing coilzandrom the coil to binding. La

post G.; Theother control circuit passes @o 'from D to the opening coil and fromthe coil" to binding post Fromthese points ,.thee'lrcuit is controlled by an automatic auxiliary; switch, shown in Fig.' This comprises` spring-arm .23 connected ,to a bell-cran member 24, which is in`turnypiroted (at-20' to a. conducting-strip 2G, and this s tripis-in;

tm'nconneeted to a binding post lvl, theistrip;

and, binding `post being;-snpported ,-a1p-in frame members1 5, Vbut v`s uita1 )lyinsulated;I From bindingpostll. :i conductor commqng. to both the opening and-'closing.1nagl1et.oils, goes .to thecontrolgstations .Belglcranl meme 5 ber Zfi-isurged to the. positionshoivn u @Fig 3 by a'. spring-27, und armg ,`oi..vthe,fidelle.v crank is acturtedaipon by'- an nsulatved,l 29 carried by" the main anmatnre l2, A .When the circuit f Controlled fbi this 'muil-,1f switch is open,y l.ix-'ith the" being. the j. a position shown in Figs. l and 3, to close the l main circuit the closing coil 6 is energized,

' the opening circuit and restablishing the minal B, closing the circuit.

thus causing armature 12 to be attracted to core 3. This swings the free ends of the conductor bridge into engagement with the ter- At the same time, latch 18 strikes roller 16, is retracted, passes and engages with the roller and holds the armature down against the effort of that the yswitch 23 intoengagement with contact F and the circuits are then ready for an opening action in anv obvious manner.

` An important feature of the invention is switch unit shown, which corresponds to a single pole device, may be duplicated for a double pole switch, and so on, without any modification or diiiculty other iliary .stud 29 (Fig. 3) strikes bell-crank arm28 suitable way.

sprmg member 14.-. In closing, armature than connecting the additional switches in a Another'. important feature, and moves the end of spring-contact-memas above explained, is the utilization of the ber 23 from engagement with binding post laminated conductor 13 as a spring member Gr, thus breaking .the circuit through the to effect opening of the switch. Anotherimclosing coil and engages the spring member portant feature is the simplicity resulting 23 with binding post F, thus closing the cirfrom the arrangement of the switch coils one cuit through the opening coil so far as this within the other and their combination with part of the mechanism is concerned. When a hollowr core piece, as shown, and thev utilithe controlling switch is properly actuated zation of a common internal magnetic cirat the controlling station to complete the cuit. Another important feature is the opening circuit, the opening coil 17 is enerdirect action provided. The pull of the closgized, plunger 8 is thus raised against its ing coil is exerted directly on the main spring 11 and stem 9 acts upon trigger 21 armature to which the bridge is firmly and to release hook 18 from detent rollerv 16. directly attached. The latch and trigger be- The spring member thereupon raises the ing directly mounted on the armature also armature and breaks the main circuit. Stud provides great simplicity and positiveness 29 at the same time releases bell-crank 24 of action. Another important feature is the and the movable contact 23 leaves binding location of the magnets directly beneath the post F and engages with G, thus breaking mainlarmature.

c aim:- closing circuit so far. as the remote control l. In a switch of the class described, the switch is concerned ready for the next closcombination of a base, a magnet frame coming action. 'f p prising uprights and a hollow core piece, a When 'the closing coil is energized, it exmagnet surrounding the core, a magnet erts some pull upon the plunger 8 and to within the core, a main' armature pivoted to counteract this the spring 11 is provided. one of the uprights, a movable mam contact When the opening coil 7 is energized its pull carried thereby, latch mechanism intermeis suficient to overcome ,the spring and raise diate the main armature and one of the u the plunger as above described. rights, and an auxiliary switch actuated i- At the pivoted connection 12 of the main rectly by the main armature for controlling armature 12, a finger 12b is provided to enthe circuit through said. ma et. gage frame member 4 and limit the opening 2. In a switch of the class described, the movement. combination of a base, a magnet frame com- The provision of a, roller 16 as a detent prising uprights and a hollow core piece, a member for the latch may not in all cases be magnet coil surrounding the core, a magnet essential, but it provides an easy and im'- Yrwithin the core, a main armature pivoted to proved latch action, and will, therefore, one of the uprights, a movable mam contact usually be preferable. carried thereby, latch mechanism interme- Fig.5 shows a suitable controlling circuit. diate the main armature and one of the up- S designates a generator or other source of rights, 4 a releasing current. Positive and negative lines are deswith said inner e011 and said latch mechaignated by Conventional characters and the nism, and an auxiliary switch carried by one bridge or movable conductor 13 of the armaof the uprights and actuated directly b the e coil 6, and back through switch 23 to the posture of the remote control switch is shown main armature for controlling the circuit inserted in the positive line. The main cirthrough said coils. cuit is open and theI control switch K at the 3. In a switch of the class described, the station is shown in open position. The auxcombination of main terminals, a main iliary switch 23 at the remote control point armature, a contact carried thereby for conis .shown in circuit with the closing coil 6. necting the terminals, a tubular core adja- Wlien it is desired to close the main circuit, cent to the armature,- a magnet coil placed switch 'K is thrown over. A circuit is thus about the core, a magnet coil located within established from the current source through the core, latch mechanism for the main the negative line, toand through the closing armature and a releasing armature withm the inner coil for actuating the latch 'mecha- The closing nism.

itive side of the generator. -A h 4. In a swltch of the class descrlbed, the

movement of the main armature throws auxarmature coperating I combination of main terminals, a framepiece comprising a tubular core, a main armature pivoted to the frame-piece, a contact carried by said armature for connecting the terminals, a magnet coil placed about the core, a magnet coil located Within the core, latch mechanism for the main armature and means acted upon by the magnetic circuit of one of said coils for operating said latch mechanism, the magnetic circuit of the other of said coils serving to move the main armature to closed position. Y

5. In a switch ofthe class described, the combination of main terminals, a framepiece comprising a tubular core, a main armature pivoted to the frame-piece, a conf tact carried by said armature for connecting the terminals, a magnet coil placed about the core, a magnet coil located within the core, latch mechanism for the main armature and means acted upon by the magnetic circuit of one of said coils for operating said latch mechanism, the magnetic circuit of the other of said coils serving to move the main armature to closed position, and an auxiliary switch actuated by the main armature to 1control operating circuits through said co1 s.

6. In a switch of the class described, the combination of main terminals, a main armature, a contact carried thereby for connecting the terminals, a tubular core adja cent to the armature, a magnet coil placed about the core, a magnet coil located Within the core, latch mechanism for ,the mam armature, a releasing armature Within the 'inner coil for actuating the latch mechanism, and an auxiliary switch actuated by the main armature and serving t0 control circuits through said coils.

. WALTER S. MAYER. Witnesses:

CHARLES YV. SMITH, ABNER COLEMAN. 

